`this.$refs.tree.getNodes({})` does not return any node

[lwolter]

The function this.$refs.tree.getNodes({}) does not return any node with me since version 1.5.0.
This is probably the cause of my problem with the expansion of the nodes that I reported 3 weeks ago. Excuse the late answer.

[halower]

my email is youzisoft@qq.com， you are welcome to complete it.

[lwolter]

I have slightly expanded the method. If isOriginal does not exist, it is assumed to be true. If opt is not defined or empty, the loop is not used for filtering.

      getNodes (opt, data, isOriginal) {
        data = data || this.data
        let res = []
        isOriginal = isOriginal === undefined? true:isOriginal
        let optExists = false
        if (opt) {
          optExists = Object.keys(opt).length > 0
        }
        for (const node of data) {
          if (optExists) {
            for (const [key, value] of Object.entries(opt)) {
              if (node[key] === value) {
                if (isOriginal) {
                  res.push(node)
                } else {
                  let n = Object.assign({}, node)
                  delete n['parent']
                  delete n['children']
                  res.push(n)
                }
              }
            }
          }else {
            if (isOriginal) {
              res.push(node)
            } else {
              let n = Object.assign({}, node)
              delete n['parent']
              delete n['children']
              res.push(n)
            }
          }
          if (node.children && node.children.length) {
            res = res.concat(this.getNodes(opt, node.children, isOriginal))
          }
        }
        return res
      },

Since I am not a Javascript expert, I am grateful if you could check the code and take over.

[halower]

well written, I will merge it into the next release

[halower]

already merged